24 Uses Of Carlos Bernard:
Season 1: Tony was a pain in the ass here. He was one of Jack's nemesis, but in the later parts, he was great and much more helpful than before.
Season 2: Tony was under Mason's orders. Tony was a whole lot better. He was engaged with Michelle, a new 24 character who seems to have a difficult past.
Seson 3: WOW! Tony was shot in the neck! Apparently, he recovered but was less energetic. Once he was in the hospital, Michelle took his place as Head of CTU.
Season 4: He saved Jack and Audrey at the last second and interrogated Dina Araz, helped Jack fake his death, supported in a lot of things, so I see that he is very useful.
Season 5: USELESS.
So, I have to say carlos Bernard is great, and I am looking forward for his S7 return!